Hystrichosphaeridium paulinae (Valensi, 1953) Downie and Sarjeant, 1965

Now Dapsilidinium?. Originally Micrhystridium, subsequently Hystrichosphaeridium, thirdly Polysphaeridium?, fourthly (and now) Dapsilidinium?.
Holotype: Valensi, 1953 pl.12, fig.6
Age: Middle Jurassic